/*
    数组演示
*/
#include <stdio.h>
int main() {
    int arr[5], num = 0;
    arr[2] = 10;
    printf("*(arr + 2)是%d\n",*(arr + 2));
    for(num = 4; num >= 0; num--) {
	printf("%d ", arr[num] = num + 1);
    }
    printf("\n");
    for(num = 0; num <= 4; num++) {
	printf("%d ", arr[num] = num + 1);
    }
    printf("\n");
    return 0;
}
